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From: "jimmaureenrogers@worldnet.att.net" <jimmaureenrogers@worldnet.att.net>
Newsgroups: comp.lang.ada
Subject: Re: Air traffic control system in Java
Date: Mon, 7 Mar 2011 04:26:40 -0800 (PST)
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On Mar 3, 2:27=A0pm, Hyman Rosen <hyro...@mail.com> wrote:
> On 3/3/2011 4:13 PM, Vinzent Hoefler wrote:
>
> > Hyman Rosen wrote:
>
>
> =A0 =A0 =A0In this paper we present a new multiprocessor garbage collecto=
r
> =A0 =A0 =A0that achieves maximum measured pause times of 2.6 milliseconds
> =A0 =A0 =A0over a set of eleven benchmark programs that perform significa=
nt
> =A0 =A0 =A0amounts of memory allocation.
>

The real time systems I work on cannot spare a random 2.6 milliseconds
of processing time.
I suspect that many tightly synchronized and scheduled systems would
exhibit erroneous results given a random 2.6 milliseconds of timing
jitter. Our system must be accurately timed to the micro-second level.

The IBM people have over-promised when they claimed that their garbage
collector is non-intrusive.

Jim Rogers